Mnemonics

"code", "block", "enclose", "brace yourself"

primary use is to enclose literal code

also used for hashes

Used as a brace pair or quote pair

{} "creates a Closure"<>
{} except with specific contents inside or as part of a variable term denotes use for hashes
{} empty as part of a term allows hashes to be interpolated
{} during hash declaration sets up user defined indexing
{} injects hash information in POD delimited blocks
{} when used as a user supplied delimiter to a quote, match, or substitution, is merely a general quoting character